The video is better than the article, but I think they’re both built on a flawed premise. I would much rather this were presented as “Here are two people with an interesting place in a hobby you might not think about too much” instead of “The Last Pinball Doctors”. It makes it seem as though there are only two guys left to repair these machines. I could have found half a dozen people with at least as much knowledge as these two without leaving the KC area.
Here’s a video that features several of them, even though it’s not specifically about repair: